Is there an adaptor letting me charge my iPad &iPhone 5 from the one wall charger?

I have an iPad and an iPhone 5 and charge both by pulling out the charging cable from one to charge the other. I've been given a iPhone charging dock but it needs its own power source. Is their some type of splitter/adaptor which would let me charge both from the one power supply. Sorry for what may be a very basic question - I'm not very tech savvy. The part number, if it exists, would really help. Thanks very much. Livvi